Old Faithful Geyser Data

Description

Waiting time between eruptions and the duration of the eruption for
the Old Faithful geyser in Yellowstone National Park, Wyoming, USA.

Usage

faithful

Format

A data frame with 272 observations on 2 variables.

[,1]

eruptions

numeric

Eruption time in mins

[,2]

waiting

numeric

Waiting time to next
eruption (in mins)

Details

A closer look at faithful$eruptions reveals that these are
heavily rounded times originally in seconds, where multiples of 5 are
more frequent than expected under non-human measurement. For a
better version of the eruption times, see the example below.

There are many versions of this dataset around: Azzalini and Bowman
(1990) use a more complete version.